For the first half of “The Hateful Eight” (2015) (BTW, I counted nine relatively hateful main characters, but anyway…), there is surprisingly little violence. There is, however, a scene in which bounty hunter Kurt Russell expresses concern that a duplicitous co-conspirator will get jumpy and reveal themselves. The jumpy one turns out to be Quentin Tarantino, who could no longer hold back his violent instincts and unleashes a torrent of blood that drowns what had been a downright Hitchcockian Western mystery. I’m not stupid. I know Tarantino deals in the visceral. But there’s usually a payoff. Here, not so much.